CN109339971A - Laser hardens main beating cap and its manufacturing method - Google Patents
Laser hardens main beating cap and its manufacturing method Download PDFInfo
- Publication number
- CN109339971A CN109339971A CN201811503275.1A CN201811503275A CN109339971A CN 109339971 A CN109339971 A CN 109339971A CN 201811503275 A CN201811503275 A CN 201811503275A CN 109339971 A CN109339971 A CN 109339971A
- Authority
- CN
- China
- Prior art keywords
- quench
- beating cap
- main beating
- hardened case
- hardness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
Abstract
It hardens main beating cap and its manufacturing method the invention discloses a kind of laser, laser main beating cap of hardening includes: main beating cap ontology, and main beating cap ontology lower half portion has half slot；Boss, boss are located at the bottom at main beating cap ontology both ends；Screw hole, screw hole are opened in the both ends of main beating cap ontology, and screw hole is for accommodating fixing bolt；And quench-hardened case, quench-hardened case are located at around screw hole, quench-hardened case is annular in shape, and there are gaps between the interior edge of quench-hardened case and the outer of screw hole；Wherein, the hardness of quench-hardened case is greater than the hardness of fixing bolt, and wherein, and the hardness of quench-hardened case is less than the hardness of main beating cap ontology.The present invention is around the screw hole of bolt of main bearing cap mounting surface with one circle quench-hardened case of laser processing, to make bolt pressure-bearing surface hardness become smaller, is conducive to the uniform of mounting torque, reduces the uneven of Tightening moment, make to fasten failure rate that is relatively reliable, and can be effectively reduced part.
Description
Technical field
The present invention relates to crankshaft of diesel engine assembly field, harden main beating cap and its manufacture especially with regard to a kind of laser
Method.
Background technique
Engine main bearing cover is limited by the space of engine, it is difficult to arrange more pieces of bolts.And main beating cap bears to come
From the huge impulse force of engine detonation pressure etc., very high, the contact surface of main beating cap and bolt is required to the Tightening moment of bolt
It is required that it is also very high, since main beating cap casting obtains, slight loose or material prescription variation or chemical element
Unevenly all the hardness of local location can be caused uneven, this causes the hardness of the contact surface of main beating cap and bolt to be difficult
Even consistent, so as to cause under the action of identical Tightening moment, the fastening force of bolt is inconsistent, and non-uniform fastening force will be led
It causes main bearing hole bearing shell fit clearance inconsistent, leads to the inconsistent of oil film thickness, the insufficient lubrication of shafting, and then influence to start
The service life of machine.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The shortcomings that hardening main beating cap the purpose of the present invention is to provide a kind of laser, the prior art can be overcome.
It hardens the method for main beating cap another object of the present invention is to provide a kind of manufacture laser.
To achieve the above object, it hardens main beating cap the present invention provides a kind of laser, comprising: main beating cap ontology, it is main
Bearing cap ontology lower half portion has half slot；Boss, boss are located at the bottom at main beating cap ontology both ends；Screw hole, screw hole are opened
Set on the both ends of main beating cap ontology, screw hole is for accommodating fixing bolt；And quench-hardened case, quench-hardened case are located at around screw hole, quench
Hard formation is annular in shape, and there are gaps between the interior edge of quench-hardened case and the outer of screw hole；Wherein, the hardness of quench-hardened case, which is greater than, fixes
The hardness of bolt, and wherein, the hardness of quench-hardened case is less than the hardness of main beating cap ontology.
In a preferred embodiment, the hardness of quench-hardened case is 200-220HBW bigger than the hardness of fixing bolt.
In a preferred embodiment, the width of quench-hardened case is 1-5mm.
In a preferred embodiment, the width in gap is 2-7mm.
It manufactures laser as above the present invention also provides a kind of and hardens the method for main beating cap, include the following steps: to cast
Main beating cap ontology is formed, main beating cap ontology lower half portion has half slot, and the bottom at main beating cap ontology both ends has convex
Platform, and the both ends of main beating cap ontology offer screw hole；And quench-hardened case is formed using laser processing around screw hole,
Wherein, quench-hardened case is located at around screw hole, and quench-hardened case is annular in shape, and between existing between the interior edge of quench-hardened case and the outer of screw hole
Gap；Wherein, the hardness of quench-hardened case is greater than the hardness of fixing bolt, and wherein, and the hardness of quench-hardened case is less than main beating cap ontology
Hardness.
In a preferred embodiment, the hardness of quench-hardened case is 200-220HBW bigger than the hardness of fixing bolt.
In a preferred embodiment, the width of quench-hardened case is 1-5mm.
In a preferred embodiment, the width in gap is 2-7mm.
Compared with prior art, laser according to the present invention hardens main beating cap and its manufacturing method has the advantages that
The present invention is around the screw hole of bolt of main bearing cap mounting surface with one circle quench-hardened case of laser processing；To make bolt pressure-bearing surface hardness
Variation becomes smaller, and the Tightening moment deviation of bolt is also just smaller, is conducive to the uniform of mounting torque, reduces Tightening moment
Unevenly, make to fasten relatively reliable, the program is at low cost, and it is easy to accomplish, the failure rate of part can be effectively reduced.
Detailed description of the invention
Fig. 1 is that laser according to an embodiment of the present invention hardens the structural schematic diagram of main beating cap.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, laser according to the preferred embodiment of the present invention hardens main beating cap include: main beating cap ontology 1,
Quench-hardened case 2, screw hole 3 and boss 5.Wherein, main beating cap ontology lower half portion has half slot 4, and boss 5 is located at main beating cap
The bottom at ontology both ends.Screw hole 3 is opened in the both ends of main beating cap ontology, and screw hole 3 is for accommodating fixing bolt.Quench-hardened case 2
Around screw hole 3, quench-hardened case 2 is annular in shape, and there are gaps between the interior edge of quench-hardened case 2 and the outer of screw hole 3.Wherein, it quenches
The hardness of hard formation 2 is greater than the hardness of fixing bolt, and wherein, and the hardness of quench-hardened case 2 is less than the hardness of main beating cap ontology.
In a preferred embodiment, the hardness of quench-hardened case is 200-220HBW bigger than the hardness of fixing bolt.
In a preferred embodiment, the width of quench-hardened case is 1-5mm.
In a preferred embodiment, the width in gap is 2-7mm.
It manufactures laser as above the present invention also provides a kind of and hardens the method for main beating cap, include the following steps: to cast
Main beating cap ontology is formed, main beating cap ontology lower half portion has half slot, and the bottom at main beating cap ontology both ends has convex
Platform, and the both ends of main beating cap ontology offer screw hole；And quench-hardened case is formed using laser processing around screw hole,
Wherein, quench-hardened case is located at around screw hole, and quench-hardened case is annular in shape, and between existing between the interior edge of quench-hardened case and the outer of screw hole
Gap；Wherein, the hardness of quench-hardened case is greater than the hardness of fixing bolt, and wherein, and the hardness of quench-hardened case is less than main beating cap ontology
Hardness.
In a preferred embodiment, the width of quench-hardened case is 1-5mm.
In a preferred embodiment, the width in gap is 2-7mm.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (8)
- The main beating cap 1. a kind of laser hardens, which is characterized in that laser main beating cap of hardening includes:Main beating cap ontology, main beating cap ontology lower half portion have half slot；Boss, the boss are located at the bottom at main beating cap ontology both ends；Screw hole, the screw hole are opened in the both ends of the main beating cap ontology, and the screw hole is for accommodating fixing bolt；AndQuench-hardened case, the quench-hardened case are located at around the screw hole, and the quench-hardened case is annular in shape, and the interior edge of the quench-hardened case with There are gaps between the outer of the screw hole；Wherein, the hardness of the quench-hardened case is greater than the hardness of the fixing bolt, and wherein, the hardness of the quench-hardened case is less than The hardness of the main beating cap ontology.
- The main beating cap 2. laser as described in claim 1 hardens, which is characterized in that the hardness of the quench-hardened case is than the fixation The big 200-220HBW of the hardness of bolt.
- The main beating cap 3. laser as described in claim 1 hardens, which is characterized in that the width of the quench-hardened case is 1-5mm.
- The main beating cap 4. laser as described in claim 1 hardens, which is characterized in that the width in the gap is 2-7mm.
- It manufactures laser as described in claim 1 5. a kind of and hardens the method for main beating cap, which is characterized in that the method includes Following steps:Main beating cap ontology described in casting and forming, main beating cap ontology lower half portion have half slot, the main beating cap The bottom at ontology both ends has boss, and the both ends of the main beating cap ontology offer screw hole；AndQuench-hardened case is formed using laser processing around the screw hole, wherein the quench-hardened case is located at around the screw hole, The quench-hardened case is annular in shape, and there are gaps between the interior edge of the quench-hardened case and the outer of the screw hole；Wherein, the hardness of the quench-hardened case is greater than the hardness of the fixing bolt, and wherein, the hardness of the quench-hardened case is less than The hardness of the main beating cap ontology.
- 6. method as claimed in claim 5, which is characterized in that the hardness of the quench-hardened case is bigger than the hardness of the fixing bolt 200-220HBW。
- 7. method as claimed in claim 5, which is characterized in that the width of the quench-hardened case is 1-5mm.
- 8. method as claimed in claim 5, which is characterized in that the width in the gap is 2-7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811503275.1A CN109339971B (en) | 2018-12-10 | 2018-12-10 | Laser-hardened main bearing cap and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811503275.1A CN109339971B (en) | 2018-12-10 | 2018-12-10 | Laser-hardened main bearing cap and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109339971A true CN109339971A (en) | 2019-02-15 |
| CN109339971B CN109339971B (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811503275.1A Active CN109339971B (en) | 2018-12-10 | 2018-12-10 | Laser-hardened main bearing cap and method for manufacturing same |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128981Y (en) * | 1992-08-14 | 1993-03-31 | 李荫候 | Improved base bearing cover for 492Q type gasloine engine |
| US6626576B1 (en) * | 2000-02-02 | 2003-09-30 | Gkn Sinter Metals, Inc. | Duplex powder metal bearing caps and method of making them |
| JP2009166666A (en) * | 2008-01-16 | 2009-07-30 | Ntn Corp | Wheel bearing device |
| CN201982199U (en) * | 2011-01-22 | 2011-09-21 | 奇瑞汽车股份有限公司 | Main bearing cover of engine |
| CN105081692A (en) * | 2015-08-04 | 2015-11-25 | 南车戚墅堰机车有限公司 | Machining method for tapered strength structure of oil hole of piston pin of large-powder diesel engine |
| CN106244794A (en) * | 2016-08-31 | 2016-12-21 | 国核宝钛锆业股份公司 | A kind of method improving the cold pilger mill pass life-span |
| CN106755756A (en) * | 2017-01-10 | 2017-05-31 | 中国科学院半导体研究所 | Laser-quenching apparatus and method of a kind of bearing surface without tempering soft ribbons |
| CN108559819A (en) * | 2017-12-25 | 2018-09-21 | 江苏大学 | The laser transformation hardening method and processing unit (plant) of variable pitch/yaw bearing lasso raceway |
| CN209067360U (en) * | 2018-12-10 | 2019-07-05 | 广西玉柴机器股份有限公司 | Laser hardens main beating cap |
-
2018
- 2018-12-10 CN CN201811503275.1A patent/CN109339971B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128981Y (en) * | 1992-08-14 | 1993-03-31 | 李荫候 | Improved base bearing cover for 492Q type gasloine engine |
| US6626576B1 (en) * | 2000-02-02 | 2003-09-30 | Gkn Sinter Metals, Inc. | Duplex powder metal bearing caps and method of making them |
| JP2009166666A (en) * | 2008-01-16 | 2009-07-30 | Ntn Corp | Wheel bearing device |
| CN201982199U (en) * | 2011-01-22 | 2011-09-21 | 奇瑞汽车股份有限公司 | Main bearing cover of engine |
| CN105081692A (en) * | 2015-08-04 | 2015-11-25 | 南车戚墅堰机车有限公司 | Machining method for tapered strength structure of oil hole of piston pin of large-powder diesel engine |
| CN106244794A (en) * | 2016-08-31 | 2016-12-21 | 国核宝钛锆业股份公司 | A kind of method improving the cold pilger mill pass life-span |
| CN106755756A (en) * | 2017-01-10 | 2017-05-31 | 中国科学院半导体研究所 | Laser-quenching apparatus and method of a kind of bearing surface without tempering soft ribbons |
| CN108559819A (en) * | 2017-12-25 | 2018-09-21 | 江苏大学 | The laser transformation hardening method and processing unit (plant) of variable pitch/yaw bearing lasso raceway |
| CN209067360U (en) * | 2018-12-10 | 2019-07-05 | 广西玉柴机器股份有限公司 | Laser hardens main beating cap |
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| Publication number | Publication date |
|---|---|
| CN109339971B (en) | 2020-04-28 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230109 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |
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| TR01 | Transfer of patent right |